Pump-piston.



S. W. LUITWIELER.

PUMP PSTON.

APPLlcATloN FILED fiala, |913.

1,214,696. Patented Feb. 6,1917.

Elli' Samuel .Wlaiwl'eler SAMUEL W. LUITWIELER, OF ROCHESTER, NEW YORK.

PUMP-PISTON.

imacat.

Application filed February 28, 1913.

To all whom t may concern:

Be it known that I, SAMUEL W. LUIT- winnen, of Rochester, in the county of Monroe and State of New York, have invented certain new and useful improvements in Pump-Pistons; and i do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the reference-numerals marked thereon.

,lily invention relates to improvements in pump pistons of the rcciln'ocating type, characterized generally by a valve which opens on the down stroke of the piston to permit the passage of water upwardly and closes on the up stroke to raise and force out the water, and it has for its object to provide a` piston or plunger of novel construction, having for a chief advantage its lightness in weight, and a comparatively low cost of manufacture.

Another object of my invention consists in the provision of an arrangement whereby the flexible packing rings can be readily applied and fiXedly secured in such a manner as to insure their being properly positioned on the piston frame, thus adding materially to the eiciency of the operation of the piston.

A further object of my invention consists in the means whereby I make it possible to simultaneously apply or remove a series of packing rings and to hold them all in position by a single' securing means.

To these and other ends the invention consists in certain improvements and combinations of parts all as will be hereinafter more fully described, the novel features being pointed out in the claim at the end of the specification.

In the drawings: Figure 1 is a vertical sectional view of a piston embodying a preferred application of my improvement; Fig. 2 is a sectional view on the line Qa- 1 of Fig. 1, and Fig. 3 is a bottom plan view.

Similar reference characters throughout the several figures indicate the same parts.

In the embodiment of the invention as herein described and illustrated, 1 designates a piston rod which is attached at its lower end to a threaded sleeve 2, which is in turn secured on the upper end of the piston frame. Said piston frame comprises a hub portion 3 on which are formed a plurality of radially projecting walls or webs Speciication of Letters Patent.

Patented Feb, 1917.

serial 110,751,250.

4 which extend a substantial distance below the bottom of the hub portion, the lower ends of the walls 4c being reduced, and connected by the annularring 5 which is provided with integrally formed enlarged portions 6 having threaded openings 7 therein for a purpose presently to be mentioned. rllhe walls 4L are connected at their upper ends by the annular portion 8 having a recess therein constituting the beveled valve seat 9 tapering inwardly and downwardly and adapted to receive the valve l0, which is arranged on the beveled hub 2l, tapered in an opposite direction to the seat to form a second valve seat for the lower portion ofthe valve, said valve being movable vertically between the valve seats and the lower end of the sleeve 2. The annular portion 8 is extended downwardly for some distance and is provided at its lower end with the'reduced portion or flange 11 affording a supporting surface for the uppermost packing ring l2. The annular portion 8 is undercut at 13 for the purpose of more rigidly retaining the packing ring in position, as will be more clearly shown hereinafter. l

141- designates an annular ring formed integral with the walls land connecting the latter to afford a seat for the packing ring 15 while the lowermost .packing ring 16 engages the aforementioned annular ring 5.

17 designate spacing rings arranged between the respective packing rings, the engaging edges of the rings 17 being beveled or inclined as shown, so as to afford a substantially dovetailed recess for holding the packing rings in position. The packing rings and spacing rings are arranged loosely on the piston frame, being held in position by a suitable means which serves to retain all the parts in their proper assembled relation. To this end, i provide a securing ring 18 open at its center having a beveled edge 19 arranged to engage the lowermost packing ring 16 and provided with a-series of inwardly extending lugs having openings through which pass` the bolts 20 having engagement with the threaded openings 7 in the frame. The securing ring 18 is held by means of nuts 21 which engage the bolts 20, the latter being slotted at 22 to receive wires 23, which are passed over the lugs 24 as shown, and serve as effective means for locking the several nuts against turning movement.

By this construction, an extremely simple device is ail'orded, the arrangement being such that every part of the metal is utilized, and all unnecessary parts are omitted, thus reducing the weight of the piston to a minimum without affecting its strength and durability.

Vith my present construction it is a comparatively simple mattei' to assemble the several. packing rings and 'they are secured by a rigid fastening means, being gripped by an even pressure throughout, without having any twisting or side strains imparted to them, as the pressure oi the fastening means comes only in a direction transversely of the walls of the packing rings. The piston can be quickly dismantled, and when the rings are in place, they cannot by any possibility become accidentally loosened.

I claim as my invention:

A pump piston comprising a frame embodying a hub and a plurality of radially eX- tending` ribs formed on the hub, the ribs being connected at their upper ends by an vof* the inner face of which is mounted in sliding engagement with the ribs and adapted to retain the lowermost packing ring, said securing ring being open at its center and mounted independently of the hub, enlarge ments projecting inwardly `from the securing ring and terminating substantially beneath the itirst mentioned enlargements and means carried bythe second mentioned enlargements in engagement with the first for supporting said securing ring.

SAMUEL W. LUITTWIELER.

Vi tnesses H. E. S'roNnaAiinz, RUSSELL B. Gicrrrrrn.

Copies ofthis patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

